Automatic stop for sound-reproducing machines.



W. V.'GERSTBR. AUTOMATIC STOP FOR SOUND RBPRODUOING MACHINES.

APPLICATION FILED 00111, 1912.

Patented July 21, 1914 Llm w u WILLIAM V. GERSTER, OF PITTSBURGH, PENNSYLVANIA.

AUTOMATIC STOP FOR SOUND-REPRODUCING MACHINES.

icense.

Specification of Letters Patent.

Patented Jul at, 1914.

Application filed October 11, 1912. Serial No. 725,204.

T 0 all whom it may concern:

Be it known that I, lVILLIAM V. Gnns'rnn, a Citizen of the United States. resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented a new and useful improvement in Automatic Stops for Sound Reproducing Machines; and I do herebydeclare the following to be a full, clear, and exact description thereof.

My invention relates to automatic stops for sound producing machines.

The object of my invention is to provide a simple and effective device for causing the operating of the mechanism of such a machine to be discontinued upon the rendering of a record.

A further object of my invent-ion is to 'efi'ect a construction of stop that will permit the same to be attached and maintained operatively on the machine without inconvenience to the positioning or removing of records.

In the accompanying drawings, Figure l is a plan view representing a sound reproducing machine having my invention connected thereto. Figs. 2'and 3 are enlarged plan views showing my invention and the common operating lever of the machine in different operative positions. Fig. 4 is a View, in elevation of the parts shown in Figs. 2 and 3, without the common operat ing lever and its actuating mechanism. igs. 5 and 6 are slmilar views of parts shown in Fig. 4. Fig. 7 is a view, in elevation, of a band or clamp pin.

Reference numepals in the ,following specifications refer to like parts in the drawings in which a well known construction of sound reproducing machine 10 is represented comprising the usual stand 11, rotary table 12 on which is carried the disk record 1 1%, a sound arm 14, and a common operating lever lfrfor controlling the operation of he mechanism oi the machine.

(Fig. 1.) A small'base:plate 16 having a spindle 17 at one end'thereof is suitably secured upon the stand 11. ()n the spindle 17 (Figs. 4 and '5) a swivel pin to, having an enlarged basc'18 is mountcdgsaid enlarged'base having a slot 1!) at its lower tremity. Uver-thoswivel pin 18 a swivel cap 20 is carried on tliebasc lS the said cap being provided with a set screw 21 for engaging the swivel pin ligand having a rod .22 projecting therefrom. Operatively secured at 16 (FigSLfZ and 3) isa pawl 23 one end of which extends into the slot 19 as does also one end of a spring 24 which 18 attached to said pawl for the purpose of taking up any slack between the pawl and the sides of the slot. The other end 23' of the pawl. is SUbJQCtto pressure from a spring 25 which forces the pawl against the periphery of the ratchet 26 so as to engage the notch 27 of the latter which ratchet is operatively secured upon the base plate 16. The ratchet is also provided with a notch 28 and a stud 29 which is adapted to limit the movement'o't the ratchet inone direction by contact with the base plate 16 in the recess 30. The common starting lever 15 is subjected to pressure when at the point designated as the starting point, (Fig. 2) preferably by a spring 31, (Fig. 1) having one end suitably secured, preferably to a small shaft (not shown) which may be keyed to the lower end of the pin 33 upon which the starting lever is carried, for the purpose of operating the latter, the other end of the spring 61 being secured at any suitable point, as at 34, so that it will exercise a strain upon the starting lever when the latter is at the starting position.

With the device constructed as shown and described it may be secured to the stand 11 by common screws inserted through suitable openii'lgs in the base plate 16, which is positioned relative to the outer end of the starting lever 15. so that the notch 28 in the 'atchet 26 will be engaged when the ever is moved toward the starting point and will thereby be turned until the notch 27 meets and is engaged by the end 23' of the pawl by reason of the ncssure of the spring 25 the lever attains the starting position.

Assuming the set screw 21 to be loose, the pro ecting rod 2'2 may be projected outside the plane of the rotary table 12, so that the usual record may be positioned on the table, without any trouble or inconvenience peculiar to my invention being attached. After the record has been positioncdthe sound arm may be moved over the record so that the needle (not shown) is at a point where the inscribed music on the record is terminatcd. While the. needle is at'this point the projecting rod :52 is swung over the disk and against the band-pin and while the rod is in contact with the latter the set screw 2 is tightened against the swivel pinthe ratchet for the purpose of positioning.

on the record, (Fig. 1) The common starting lever 15 may then be moved in the direction of the starting oint( Figs. 1 and. 2) which. movement disten s the spring 31;, (Fig. l) and the outer end of the lever engages the notch 28 of the ratchet 26 which is thereby turned until the notch 27 is engaged by the pawl for the purpose of enabling the latter to hold the lever at the starting position by resisting the strain of thespring 31 upon said lever. The machine being thus set in motion the sound arm 13 moves in the regular way, carrying the band pin 35 toward and against the pro ecting rod 22 moving the same and consequently the swivel-cap 20, which by means of the set screw 21 jointly actuat'es the swivel-pin 18 against the end of the pawl 28 in the s1ot 19, thereby withdrawing the end 23 from the notch 27 of the ratchet. Thereupon the contraction of the spring 31 quickly actuates the pin 33' by means of the key shaft (not shown), previously referred to, to draw the starting lever to the stop position and in so doing reverses the ratchet, the stud 29 limiting'the latter movement of the notch 28 (Fig. 3) so that it will be engaged by the lever, upon a subsequent re turn of the latter to a starting position.

It will be obvious that various changes and modifications may be made in thecon- "struction of the device herein shown and, de-

scribed.' For example other means may be employed for returning the starting lever to the stopping position, and various other means may be adopted for engaging the lever at the starting position, all of which may be done without departing from the spirit of my invention or sacrificing any of its advantages.

What I claim as my invention and desire to secure by Letters Patent, is-

1. The combination with a rotating element, a traveling member, and a controlling lever, of a holding member positioned in the path of the controlling lever and operated to and from a holding position by said lever when the latter is moved to and from the starting position, a spring tensionally dis-- posed to retract the controllin lever from the starting" position, a pawl 'or engaging said holding member and holding the same inoperative against the tension of said spring to thereby maintain the controlling lever at the starting position, a swivelly mounted projecting rod, and a swivelly mounted member operated by a movement of said rod to actuate the pawl to disengage said holding member.

2. The combination with arotating element, a traveling member, and a controlling lever, of a horizontally projecting rod swivelly' mounted, a swivelly mounted bearing carrying said rod, a holding member operated by said controlling lever to and from a holding position by the movement of the latter to and from the starting position, a spring tensionally disposed to retract said controlling lever from the starting position, a pawl arranged to engage the holding member when said controlling lever is at the starting position to hold said holding mem-' ber inoperative against the tension of said sprlng, and means for effecting a movement of sald swivel bearing simultaneously with a movement of said swivel rod.

3. The combination with a rotating element, a traveling member and a controlling lever, of a swivelly mounted horizontally projecting rod, a swivelly mounted bearing carrying said rod, means for effecting a movement of said bearing simultaneously with a movement of said rod, a holding member operating to and from a' holding position by the movement of said ."lever, -.a-

pawl having one end positioned to engage said holding member, the other end of said pawl being engaged by said swivel bearing,and

means carried by .said traveling member for I actuating said rod durin the operation of the traveling member and thereby to etfect a combined movement of the rod and said bearing to disengage-the pawl from said holdin member.

4. The combination with a rotating element, a traveling member, and a controlling lever, of a swivelly mounted horizontally projecting rod, a swivelly mounted bearing carrying said rod, means for effecting a movement of said bearing simultaneously with a movement of the rod, a holding member operatively positioned in the path of the controlling lever to be operated to and from a holding position by said lever during a movement of the latter to and from the starting position, a spring tensionally disposed to 'efi'ect a return movement of the .said holding member from the starting position, a spring actuated pawl having one end engaging said holding member after the latter has been operated by the controlling lever, the other end of said pawl being engaged by said swivel bearing, and means carried by said traveling member for engaging said rod during the operating of the machine to effect a combined movement of said rod and swivel bearin and thereby operate said pawl to release t e holding member and permit said tensionally disposed spring to return said controlling lever to the stopping point.

In testimony whereof, I the said 'WILLIAM V. GERBTER have hereunto setmy hand.

WILLIAM V. GERSTER. W'itnesses:

JOHN M. Pmssco'r'r, Jr., J. OSCAR Emmcn.

F Qopics of this patent may be obtained for five cents each, by addressing the Commissioner of Fatents,

. Washington, I). G." 

